Portable lock.



L. GREBER.

PORTABLE LOCK.

APPLICATION FILED DEC. 26. 1916. RENEWED sEPT.27, 1918.

1 284, 65 5 Patented Nov. 12, 1918.

' [601a 65256 1. %1, alto M421 PATENT oEEioE.

LEON GREBER, or ROSLYN, NEW YORK.

PORTABLE LOCK.

Specification of Letters Patent.

Patented Nov. 12, 1918.

Application filed December 26, 1916, Serial No. 138,855. Renewed September 27, 1918. Serial No. 255,980.

To all whom it may concern:

Be it known that I, LEON GREBER, a subject of the Czar of Russia, resident of Roslyn, county of Nassau, and State of New York, have invented certain new and useful Improvements in Portable Locks, of which the following is a specification.

This invention relates to improvements in locks, particularly of the portable type, and has as its principal object the provision of a lock which cannot be operated by a common form of key and which is provided with a double retaining means for the shackle or hinged element.

Another object is to provide a lock comprised of few and simple parts, not readily liable to become disarranged and which is readily carried in the pocket.

These and other like objects are attained by the novel design, construction, and combination of parts hereafter described, and shown in the accompanying drawing, forming a material part of this specification, and in which Figure 1 is a side elevation showing the lock in a closed position.

Fig. 2 is a vertical sectional view taken on the center line of the same showing the shackle in an engaged position,

Fig. 3 is a similar sectional view showin the bolt engaging means in a retracted position.

Fig. 4 is a bottom plan view ofthe lock, and

Fig. 5 is a side elevation of the key, parts being in section to show the interior.

The lock comprises a cylindrical casin 10 encircled by a sleeve 11 at the lower en the sleeve being rigidly attached and having a pair of jaws 12 extending from one side.

Engaged in the opening between the jaws 12, by means of the pin 1a, is a shank 15 of a shackle, having an outwardly curved loop 16 terminating in a rentrantly turned arm 17 reduced at its inner end 18, through which is formed an aperture 19 and a recess 20, the reduced end entering the casingthrough an open slot 22 formed through. its wall. A spring 13 is attached to the shackle in such manner as to cause the same to remain in a normally open position.

Pivotally attached to the sleeve 11 is a pivoted cover 24 adapted to close the rear end of the casing over the sleeve at such times as the key is not in use.

The opposite end of the casing has a fixed plate 25 through which extends a stem 26, provided with an enlarged head 27, arranged to be conveniently raised by the fingers of an operator, the lower end of the stem 26 being suited to enter the recess 20 formed in the shackle.

A collar 28 is rigidly secured to the stem within the casing, and between the collar and the lower side of the plate 25, is disposed a coiled spring 29 adapted to normally maintain the point of the stem 26 in the recess. I

A plate 30 is rigidly secured transversely in the casing, the plate having a thickened portion 31 through which is formed a passage 32 adapted to receive the locking bolt 35, the outer end 36 of which is pointed so as to readily enter and engage within the aperture 19 formed in the shackle, when the bolt is pressed forward.

Formed with the locking bolt 35 is a disk 37, having a stem 38 extending oppositely to the bolt element 35, the lower end 39 of the stem being screw threaded and occupying a position relatively central within the casing.

Between the disk 37 and the rear cover element 40,which'is provided with an opening 41, and rigidly engaged with the lower end of the casing is a coiled compression spring 42 tending to-press the bolt into an engaging position. The bolt may be re"- tracted by means of the key 45, having a hollow cylindrical stem containing screwthreads 46 engageable with the screwthreads 39 on the stem and operated by the handle 47, the disk 48 making contact with the plate 40 as the key is turned in one direction after engaging with the stem, thereby retracting the bolt.

The hasp is still held in position by the point of the stem 26 until the latter element has been retracted by manipulating the head 27, the two positions being shown in Figs. 2 and 3 respectively. Thus it will be seen that a double means of engaging the shackle within the casing is provided.

Having thus described my invention, what I claim as new, and desire to secure by' Letters Patent, is

In a portable lock, the combination with aeeeea ing adapted to engage in the mentioned perforation, a fixed head at both ends of said casing, said heads having openings therethrough, a spring disposed between one of said heads and said bolt, a screw-threaded element formed with said bolt, a key having a stem suited to said screw-threaded element and enterable through an opening in the head, against which said spring abuts, a

1 second bolt slidably carried in the other manual retraction of the last named bolt 15 independently of the first named bolt.

In testimony whereof I have affixed my signature this 16 day of December, 1916,

LEON GREBER. 

